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UID:pretalx-foss4g-na-2026-KNXLWB@talks.osgeo.org
DTSTART;TZID=PST:20261103T153000
DTEND;TZID=PST:20261103T155500
DESCRIPTION:We define an aspect ratio for spherical point sets to compare D
 GGSs\,\ncomplementing metrics like area variance or isoperimetric quotient
 . We share\na fast open-source implementation\, survey aspect ratio distri
 butions across\ngrids\, and discuss generalizing to the ellipsoid.
DTSTAMP:20260814T173558Z
LOCATION:Bataglieri
SUMMARY:How Squished Are Your DGGS Cells? A Spherical Aspect Ratio - AJ Fri
 end
URL:https://talks.osgeo.org/foss4g-na-2026/talk/KNXLWB/
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UID:pretalx-foss4g-na-2026-TGRXPC@talks.osgeo.org
DTSTART;TZID=PST:20261104T103000
DTEND;TZID=PST:20261104T105500
DESCRIPTION:We can select sets of DGGS cells meeting some criterion (like t
 ravel\ntime for isochrones) while staying compactible to reduce storage.\n
 We pose an optimization problem trading off the two objectives\,\ngive exa
 mples across DGGSs\, and extend to co-compaction.
DTSTAMP:20260814T173558Z
LOCATION:Tofanelli
SUMMARY:DGGS Set Design: Compaction-Aware Optimization - AJ Friend
URL:https://talks.osgeo.org/foss4g-na-2026/talk/TGRXPC/
END:VEVENT
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UID:pretalx-foss4g-na-2026-X3ZUAX@talks.osgeo.org
DTSTART;TZID=PST:20261104T110000
DTEND;TZID=PST:20261104T112500
DESCRIPTION:Compaction reduces the storage cost of cell sets in hierarchica
 l DGGSs. We\ncover compaction along with efficient set membership querying
 \, why the "gaps" in\nmixed-resolution sets are merely an illusion\, and a
  new co-compaction algorithm for\nadditional savings.
DTSTAMP:20260814T173558Z
LOCATION:Tofanelli
SUMMARY:Hierarchical (Co-)Compaction for DGGS Cells - AJ Friend
URL:https://talks.osgeo.org/foss4g-na-2026/talk/X3ZUAX/
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